Patents by Inventor Toshimitsu Kikuchi
Toshimitsu Kikuchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11970637Abstract: Provided is a block polymer including two or more polymer block As each having a value ? of 0.20 or less and a functional group F containing at least one element selected from a group consisting of nitrogen, silicon, oxygen, and sulfur in a part or all of terminals of the two or more polymer block As, in which the block polymer has a value ? of 0.75 or more, when p, q, r and s are defined as a component proportion (molar proportion) of a structural unit represented by Formula (1), a component proportion of a structural unit represented by Formula (2), a component proportion of a structural unit represented by Formula (3), and a component proportion of a structural unit represented by Formula (4), in the polymer, respectively.Type: GrantFiled: March 8, 2022Date of Patent: April 30, 2024Assignee: ENEOS MATERIALS CORPORATIONInventors: Toshimitsu Kikuchi, Hirofumi Senga, Tatsumoto Nakahama, Takuya Sano, Takato Fukumoto, Yuto Sakagami, Toshiyuki Hayakawa
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Patent number: 11912873Abstract: There is provided a polymer composition using which a molded product having excellent balance between rigidity, wear resistance, viscoelastic properties, and heat resistance can be obtained. A polymer composition according to the disclosure includes (A) a conjugated diene rubber (where, a polymer corresponding to the following component (B) is excluded); and (B) a hydrogenated product of a polymer that satisfies the following (1) to (3), which is a polymer in which 80% or more of structural units derived from butadiene are hydrogenated: (1) being a copolymer of a conjugated diene compound containing butadiene and an aromatic vinyl compound, (2) including a polybutadiene block having a vinyl group content of 20% or less, and (3) including a block composed of a conjugated diene compound and an aromatic vinyl compound.Type: GrantFiled: January 29, 2021Date of Patent: February 27, 2024Assignee: ENEOS Materials CorporationInventors: Toshimitsu Kikuchi, Takuya Sano, Hirofumi Senga, Yuto Sakagami, Takato Fukumoto, Toshiyuki Hayakawa
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Publication number: 20240042800Abstract: A polymer composition includes a conjugated diene-based polymer (A) and a filler having a Mohs hardness of 5 or more (B), where the conjugated diene-based polymer (A) contains a polymer (A1) satisfying expression (i) when a composition ratio (molar ratio) of a structural unit represented by formula (1), a structural unit represented by formula (2), a structural unit represented by formula (3) and a structural unit represented by formula (4) in the polymer is p, q, r and s, respectively. 0.75?(p+(0.5×r))/(p+q+(0.5×r)+s)?0.Type: ApplicationFiled: December 1, 2021Publication date: February 8, 2024Applicant: ENEOS Materials CorporationInventors: Toshimitsu KIKUCHI, Hirofumi SENGA, Yuto SAKAGAMI, Takuya SANO, Takato FUKUMOTO, Toshiyuki HAYAKAWA
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Publication number: 20240002643Abstract: A polymer composition includes a conjugated diene-based polymer (A) and a liquid polymer (B). The conjugated diene-based polymer (A) includes a polymer (A1) satisfying expression (i) when a composition ratio (molar ratio) of a structural unit represented by formula (1), a structural unit represented by formula (2), a structural unit represented by formula (3) and a structural unit represented by formula (4) in the polymer is p, q, r and s, respectively; a glass transition temperature of the polymer (A1) is ?40° C. or less; and the liquid polymer (B) is polybutadiene, polyisoprene, polyisobutylene, polybutene, or the like. 0.75(p+(0.5×r))/(p+q+(0.5×r)+s)?0.Type: ApplicationFiled: November 29, 2021Publication date: January 4, 2024Applicant: ENEOS Materials CorporationInventors: Hirofumi SENGA, Toshimitsu KIKUCHI, Yuto SAKAGAMI, Takuya SANO, Takato FUKUMOTO, Toshiyuki HAYAKAWA
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Publication number: 20220290017Abstract: Provided is a block polymer including two or more polymer block As each having a value ? of 0.20 or less and a functional group F containing at least one element selected from a group consisting of nitrogen, silicon, oxygen, and sulfur in a part or all of terminals of the two or more polymer block As, in which the block polymer has a value ? of 0.75 or more, when p, q, r and s are defined as a component proportion (molar proportion) of a structural unit represented by Formula (1), a component proportion of a structural unit represented by Formula (2), a component proportion of a structural unit represented by Formula (3), and a component proportion of a structural unit represented by Formula (4), in the polymer, respectively.Type: ApplicationFiled: March 8, 2022Publication date: September 15, 2022Applicant: ENEOS MATERIALS CORPORATIONInventors: Toshimitsu KIKUCHI, Hirofumi SENGA, Tatsumoto NAKAHAMA, Takuya SANO, Takato FUKUMOTO, Yuto SAKAGAMI, Toshiyuki HAYAKAWA
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Publication number: 20220289886Abstract: Provided is a block copolymer containing 10 mass % or more of a polymer (A1) having a multi-branched structure having four or more polymer chains, the polymer chain having a polymer block A containing 70 mass % or more of a structural unit derived from a conjugated diene compound and a polymer block B containing 70 mass % or more of a structural unit derived from an aromatic vinyl compound, the block copolymer having a functional group F containing at least one element selected from the group consisting of nitrogen, silicon, oxygen, and sulfur in a part or all of terminals of the four or more polymer chains, and the block copolymer having a value ? of 0.75 or more represented by the following equation (i), when p, q, r, and s are defined as component proportions (molar proportions) of structural unit represented by the following formula (1) to formula (4), in the polymer, respectively.Type: ApplicationFiled: March 8, 2022Publication date: September 15, 2022Applicant: ENEOS MATERIALS CORPORATIONInventors: Toshimitsu KIKUCHI, Hirofumi SENGA, Tatsumoto NAKAHAMA, Takuya SANO, Takato FUKUMOTO, Yuto SAKAGAMI, Toshiyuki HAYAKAWA
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Publication number: 20220251351Abstract: A cross-linked product obtained through crosslinking a polymer composition that contains a rubber component, an inorganic filler and a cross-linking agent and that satisfies conditions (a) to (c): (a) the rubber component contains a conjugated diene-based polymer (A) having, when composition ratios (molar ratios) in the conjugated diene-based polymer (A) of structural units represented by formulae (1) to (4) are p, q, r, and s, respectively, a value ? represented by formula (i) of 0.80 or more and 0.97 or less; (b) a blending ratio of the conjugated diene-based polymer (A) is 10% by mass or more relative to a total amount of the rubber component; and (c) a blending ratio of the inorganic filler is 40 to 150 parts by mass relative to 100 parts by mass of the rubber component, wherein the Tg of the cross-linked product is ?25° C. or lower.Type: ApplicationFiled: March 30, 2020Publication date: August 11, 2022Applicant: JSR CORPORATIONInventors: Takumi ADACHI, Yuto SAKAGAMI, Hirofumi SENGA, Takuya SANO, Takato FUKUMOTO, Michitaka KAIZU, Toshimitsu KIKUCHI, Toshiyuki HAYAKAWA
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Publication number: 20220153971Abstract: A hydrogenated conjugated diene-based polymer which has a structure formed by bonding a nitrogen-containing compound having two or more alkoxysilyl groups and two or more nitrogen atoms with a plurality of conjugated diene-based polymer chains, wherein: when a composition ratio (molar ratio) in the hydrogenated conjugated diene-based polymer of each of a structural unit represented by formula (1), a structural unit represented by formula (2), a structural unit represented by formula (3), and a structural unit represented by formula (4) is p, q, r, and s, respectively, a value a represented by formula (i) is 0.80 or more and 0.97 or less, and an equilibrium storage modulus E? of the hydrogenated conjugated diene-based polymer is 2.4 MPa or more, ?=(p+(0.5×xr))/(p+q+(0.5×xr)+s) . . .Type: ApplicationFiled: March 27, 2020Publication date: May 19, 2022Applicant: JSR CORPORATIONInventors: Takumi ADACHI, Hirofumi SENGA, Michitaka KAIZU, Toshimitsu KIKUCHI, Takuya SANO
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Publication number: 20220098380Abstract: A polymer composition includes a conjugated diene polymer (A) and a compound (B). The compound (B) is at least one compound selected from the group consisting of a polysiloxane compound and a fluorine-containing compound. The conjugated diene polymer (A) contains, when the composition ratios (molar ratios) in the polymer of the structural units represented by formulas (1) to (4) are p, q, r, and s, respectively, a polymer (A-1) satisfying formula (i). 0.75?(p+(0.5×r))/(p+q+(0.5×r)+s)?0.Type: ApplicationFiled: September 20, 2021Publication date: March 31, 2022Applicant: JSR CORPORATIONInventors: Toshimitsu KIKUCHI, Hirofumi SENGA, Yuto SAKAGAMI, Takuya SANO, Takato FUKUMOTO, Toshiyuki HAYAKAWA
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Publication number: 20210238396Abstract: There is provided a polymer composition using which a molded product having excellent balance between rigidity, wear resistance, viscoelastic properties, and heat resistance can be obtained. A polymer composition according to the disclosure includes (A) a conjugated diene rubber (where, a polymer corresponding to the following component (B) is excluded); and (B) a hydrogenated product of a polymer that satisfies the following (1) to (3), which is a polymer in which 80% or more of structural units derived from butadiene are hydrogenated: (1) being a copolymer of a conjugated diene compound containing butadiene and an aromatic vinyl compound, (2) including a polybutadiene block having a vinyl group content of 20% or less, and (3) including a block composed of a conjugated diene compound and an aromatic vinyl compound.Type: ApplicationFiled: January 29, 2021Publication date: August 5, 2021Applicant: JSR CORPORATIONInventors: Toshimitsu KIKUCHI, Takuya SANO, Hirofumi SENGA, Yuto Sakagami, Takato FUKUMOTO, Toshiyuki HAYAKAWA
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Patent number: 11060020Abstract: A wavelength conversion member is provided which includes a phosphor layer having an increased pencil hardness and thereby has a reduced risk of breakage such as scattering of fragments of the phosphor layer or separation of the phosphor layer. A substrate 12 is made of sapphire, and a phosphor layer 14 is disposed on the substrate 12 and includes phosphor particles 16 and a light transmissive inorganic material 22. The phosphor layer 14 has a pencil hardness of 5B or above. The high hardness of the phosphor layer 14 reduces the risk of breakage such as the phosphor layer 14 being scattered as fragments or being separated from the substrate 12.Type: GrantFiled: December 4, 2017Date of Patent: July 13, 2021Assignee: NGK SPARK PLUG CO., LTD.Inventors: Toshimitsu Kikuchi, Yoshifumi Tsutai, Takashi Abe, Ai Hayasaka
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Publication number: 20190316034Abstract: A wavelength conversion member is provided which includes a phosphor layer having an increased pencil hardness and thereby has a reduced risk of breakage such as scattering of fragments of the phosphor layer or separation of the phosphor layer. A substrate 12 is made of sapphire, and a phosphor layer 14 is disposed on the substrate 12 and includes phosphor particles 16 and a light transmissive inorganic material 22. The phosphor layer 14 has a pencil hardness of 5B or above. The high hardness of the phosphor layer 14 reduces the risk of breakage such as the phosphor layer 14 being scattered as fragments or being separated from the substrate 12.Type: ApplicationFiled: December 4, 2017Publication date: October 17, 2019Inventors: Toshimitsu KIKUCHI, Yoshifumi TSUTAI, Takashi ABE, Ai HAYASAKA
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Patent number: 9028949Abstract: There are provided a substrate for printed wiring excellent in light transmission property, heat resistance, mechanical strength and resistance to thermal coloration; a printed wiring laminate; and a resin composition used to produce the substrate and the laminate. The substrate for printed wiring comprises an aromatic polyether-typed polymer having a glass transition temperature, as measured by differential scanning calorimetry (DSC, heating rate: 20° C./minute), of from 230° C. to 350° C.Type: GrantFiled: October 20, 2010Date of Patent: May 12, 2015Assignee: JSR CorporationInventors: Motoki Okaniwa, Toshimitsu Kikuchi, Takaaki Uno, Takashi Okada
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Publication number: 20140217322Abstract: A lithium-ion capacitor includes a non-aqueous electrolyte solution that includes (A) a compound represented by the following general formula (1), (B) a cyclic carbonate ester that includes at least one carbon-carbon unsaturated bond, and (C) a carboxylic ester, the non-aqueous electrolyte solution having a ratio (MB/MC) of 0.001 to 0.5, the ratio (MB/MC) being the ratio of the content (MB) (mmol/g) of the cyclic carbonate ester (B) to the content (MC) (mmol/g) of the carboxylic ester (C). Z+.[X(CN)m(Y)n]???(1) wherein X is at least one element selected from boron, aluminum, silicon, phosphorus, and arsenic, Y is a halogen, Z is lithium or magnesium, m is an integer from 3 to 6, and n is an integer from 0 to 5, provided that m+n?3.Type: ApplicationFiled: January 17, 2012Publication date: August 7, 2014Applicant: JSR CORPORATIONInventors: Kinji Yamada, Ho-Jin Lee, Toshimitsu Kikuchi, Taisuke Kasahara, Hiromoto Katsuyama
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Publication number: 20120199383Abstract: There are provided a substrate for printed wiring excellent in light transmission property, heat resistance, mechanical strength and resistance to thermal coloration; a printed wiring laminate; and a resin composition used to produce the substrate and the laminate. The substrate for printed wiring comprises an aromatic polyether-typed polymer having a glass transition temperature, as measured by differential scanning calorimetry (DSC, heating rate: 20° C./minute), of from 230° C. to 350° C.Type: ApplicationFiled: October 20, 2010Publication date: August 9, 2012Applicant: JSR CorporationInventors: Motoki Okaniwa, Toshimitsu Kikuchi, Takaaki Uno, Takashi Okada